Troia Benedetto, Penades Jordi Soler, Khokhar Ali Z, Nedeljkovic Milos, Alonso-Ramos Carlos, Passaro Vittorio M N, Mashanovich Goran Z
Opt Lett. 2016 Feb 1;41(3):610-3. doi: 10.1364/OL.41.000610.
We present Vernier-effect photonic microcavities based on a germanium-on-silicon technology platform, operating around the mid-infrared wavelength of 3.8 μm. Cascaded racetrack resonators have been designed to operate in the second regime of the Vernier effect, and typical Vernier comb-like spectra have been successfully demonstrated with insertion losses of ∼5 dB, maximum extinction ratios of ∼23 dB, and loaded quality factors higher than 5000. Furthermore, an add-drop racetrack resonator designed for a Vernier device has been characterized, exhibiting average insertion losses of 1 dB, extinction ratios of up to 18 dB, and a quality factor of ∼1700.
我们展示了基于硅基锗技术平台的游标效应光子微腔，其工作在3.8μm的中红外波长附近。级联的跑道形谐振器被设计用于在游标效应的第二种模式下工作，并且已经成功展示了典型的游标梳状光谱，其插入损耗约为5dB，最大消光比约为23dB，加载品质因数高于5000。此外，对一种为游标器件设计的上下支路跑道形谐振器进行了表征，其平均插入损耗为1dB，消光比高达18dB，品质因数约为1700。
